Species dependent studies of no-carrier-added 93mMo: A green method

The present paper reports a combination of radioanalytical and green methodology for the ultra-trace scale speciation of molybdenum. The differential attitude of iron-doped calcium alginate (Fe–CA) and chitosan biopolymers towards no-carrier-added 93mMo radionuclide was studied to develop environmentally sustainable speciation methodology in ultra-trace scale. The affinity of 93mMo towards the Fe–CA beads is greater than that of chitosan. Species information was obtained by comparing the adsorption profile of 93mMo on Fe–CA and chitosan biopolymer with the software code CHEAQS PRO program. From the experimental results it is concluded that no-carrier-added 93mMo radionuclide form mononuclear species instead of polynuclear species in aqueous solution. Use of biodegradable, non-toxic biopolymer makes this method a step forward towards green chemistry.